Spring Boot程序启动出现 A bean with that name has already been defined in class path resource

柔光的暖阳◎ 2022-09-04 02:46 2阅读 0赞

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0OTY1Mzkz_size_16_color_FFFFFF_t_70_pic_center]

英文原版错误提示：
       ***************************
       APPLICATION FAILED TO START
       ***************************
       Description: The bean 'webServerFactoryCustomizer', defined in class path resource [com/wanakiko/springboot/config/MyWebMvcConfig.class], could not be registered. A bean with that name has already been defined in class path resource [com/wanakiko/springboot/config/MyServerConfig.class] and overriding is disabled.
       Action: Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true
    
    中文翻译错误提示：
       ***************************  
       应用程序启动失败  
       ***************************  
       描述：bean 'webServerFactoryCustomizer'，定义在类路径资源[com/wanakiko/springboot/config/MyWebMvcConfig.class]，无法注册。 在类路径资源[com/wanakiko/springboot/config/MyServerConfig.class]中已经定义了具有该名称的bean，并且禁用了覆盖。

![在这里插入图片描述][c120f6e86e6342499c38c4e5b195fbd6.png_pic_center]

**解决方式①**(亲测无效)：根据错误提示在Spring Boot程序的application.properties中加入spring.main.allow-bean-definition-overriding=true并重启Spring Boot程序。  
![在这里插入图片描述][2d94a23207df4457be0400eb6bc4c3e1.png_pic_center]

**解决方式②**：注释已注册的WEB服务器工厂定制器并重新启动Spring Boot程序。  
  
@Bean  
public WebServerFactoryCustomizer webServerFactoryCustomizer()\{  
return factory -> factory.setPort(8080);  
\}

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ0OTY1Mzkz_size_16_color_FFFFFF_t_70_pic_center]: /images/20220829/de1d0a6005974ab18ded85b93500bc3f.png
[c120f6e86e6342499c38c4e5b195fbd6.png_pic_center]: /images/20220829/4e03a507a4414fd5b5666224deb3109d.png
[2d94a23207df4457be0400eb6bc4c3e1.png_pic_center]: /images/20220829/df289550230a46199b949164028fdd9b.png

Spring Boot程序启动出现 A bean with that name has already been defined in class path resource

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